Albert dueller



(No Modl.)

A. MUELLER.

BUFFER VALVE FOR HIGH PRESSURE GASES AND FLUIDS.

No. 531,053. Patented Dec. 18, 1894'.

.1 I .s a r I Y r m a I 5: Ir wiwm'ssz's IJVVEJVJ'OfZ THE NQFRIS PETEWS c0. F'NTO-L|TH WASKINGYDN. D. C

' I 'Ii j- 'ST TESiJ-PATENT Fries;

AL ERT MUELLERLOF NIEDEascHonwEIDE, NEAR BERLI GERMANY.

sPEcmrc'ATIoit s a pm- QfLetters-Patent Nasal p53, dated December 18,1894; Y

jApr aion filea September 21,1893. Serialliq. 486.132. a. 1.15.1515 Patent ed in Franc l M r Julyl3.l89 3.1 lo.;10 5,542.

T oblil whwnlizt mayco'lwmjn: Be it known that 1,,ALBERT MUELLER, a

subject of the Kingof Prussia, and a resident of the village of f Nieder' -,Sch6nwei de,' "near Berlin, Prussia,jGerman y, have invented oertainnewand useful'Improvements in Buffer .ValvesyfOr High-Pressure, Gases and Fluids,

(for which'I'have obtained Letters Patent of France, No. 231,366, dated July's, 1893, and'of:

' (which the following is a specificationk 3 light in weight, can be produced economically,

- connection.

My invention has' reference to a; buffer- 1 The'obje'ct of the invention isto'p'ro d uce a being used or transported, can be handled in an-easy and convenient manner, issmall and and is durable in everygrespect. 1

The accompanyingdrawings.represent my invention, and in the drawings- 1 Figure 1 shows a sectional view with the valve open; also showing interior andexterio'r' Fig. l is a .detail of the side attachments.

- Fig. 2'is a sectional view-showing the valve closed with a protecting hood, and Fig. 2 is a front view of the side connection closed. v

In the drawings like partsare indicated by like letters of reference in the several'views.

Referring to the drawings, A represents in full size the valve chest made 'of the best metal known. The interior of the same shows two smooth cylindrical passagesof different diameters, alsoone withinterior screw-thread;

The lower cylindrical passage'is occupied by a closely fitting piston 61., to the lower endof which there is attached ahard rubber shank b'driven into a suitable recess made for that purpose.

The upper part c of the shank or piston is madeof a conic form andbetween this conical part c and the lower cylindrical part a there is provided a receding curved neck, and around the same is'placed a closely and which by ineansiof asleeve h, provided with exterior. and interior screw-threads, is

tightening of the piston in an upward direc- Q BU F-HFE MV EFQR H SQRE GASE'SFTAN 1 FL 0. mslr f eJ'uly 6,1893,N0. 231,366, andin Belgium ti on.f Plate e cannot-be forced down any far-E thervth anis required for tightening thepiston,,-as'the novement of sleeve his limited by a i l er projection "provided oil-valye Chest 6o threaded Stem f e e' s g' i h the interior 7 I A. [The hand wheel g carries a short screw screw-thread on sleeve '71.. 1 Bytur'ning hand v i ing thehand wheel.

For-the purpose, of opening the valve the I hand wheel g is turned halt a revolutionto the left, whereby the upper end of the piston The discharge and the admissionof the, gases,

,owhenthe valve is open,.t a kes place through the small passages s and 'i which meet at right angles to each other. The connecting branch 0 is provided with exterior screw-thread for receivingthe nut for coupling to it the connecting tube. Itsinterio'r screw-thread engages with a metallic stopper m which pre- I wheel g" to' theextent of half a revolution to valve, without spindle, designed for high-' pressure gasesand liquids, andparticularly '65. i for liqui'dfcarbonic acid;

is freed and by the action of butter-d is au- 'tomaticall'ymaised to the-position which it must occupy when the valve is open.

Vents the outflow of gas that may have gathbecome leaky, the gas which has escaped will,

as soon as the stopper is slightly loosened,

pass out through the small channel It (provided in the stopper) toward the operator, thus putting him on his guard. By this arrangement all danger attending the opening of the valve is done' away with. The pin 47. on the stopper fits closely the passage 11 and prevents the closing of the continuation of the same by the packing disk Z uponswhich the stopper presses as it is forced inward Brepresents the head of the flask. On top of thesame there is shown .a projecting ring 7r fprovidedwith outer screw-thread for attaching to it the projecting hood C, indicated in section in Fig. 2 and rovided with a hexagonal upper projection to which the screwwrench is applied. The interior of the hexagonal projection contains a cylindrical space withinwhich is secured a hollow plug thy means of a sleeve u, said plug inclosing in its lower recessed part a rubber plug '0 which as hood 0 is screwed downward comes to rest upon the central part of the hand wheel 9, adapts itself to its surface and prevents a loosening of the hand wheel while in transit.

D indicates the screw-threaded attachment to the valve, (also represented full sized) by whichthe same is connected with the flask.

At the lower end of attachment D there is secured by screw-threads a strainer p which protects the passage q, located within said attachment and within the valve chest, against foreign bodies entering the same from the interior of the flask.

The valve is a structure complete in itself and after removal of the hood and of the stopper within the said outlet, is ready for use. The difficulties attending almost all other known valves, resulting from the necessity of sending along attachments and tools, are thus obviated. It operates under a pressure of about three hundred atmospheres as promptly and readily as under a pressure of one atmosphere, and-including the hood does not weighinuch more than one kilogram.

One of the principal difficulties attending the use of valves heretofore employed is that the spindle attached to the hand wheel, when the valve is being opened is turned too much and the apparatus thereby becomes disarranged, which is a matter of much importance as the manipulation of the valve is generally left to inexperienced persons and in conse-,

quence, under high pressures, accidents are very apt to occur. Another objection consists in the comparatively great dimension of thevalves lengthwise as well as crosswise, in consequence whereof the protecting hood must. also be made very high and of a large diameter, and a blow inflicted upon the greatly projecting hood might lead to grave danger. Besides, the far greater weight of the old type of valve must be taken into consideration as the flasks are being constantly shipped forward and backward.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is- I 1. The combination with the valve chest A provided with two compartments of different diameters and a freely operating piston, as a, closely fitting the lowermost compartment and provided with ashank extending through the upper compartment and having a conical head anda receding curved neck below said conical head, of an elastic buffer, as d, surrounding said neck, a stay plate, as e, resting on the elastic buffer and carried by the conical head of the aforesaid shank and means for forcing the stay plate down upon the buffer and for exerting pressure on the piston shank, substantially as set forth.

2. In a valvefor high-pressure gases and liquids, the combination with the valve chest provided with a branch outlet, as 0, asafety stopper for closing said outlet, said stopper having a longitudinal groove therein to permit the discharge of-any gas which may escape between the valve and plug, during transportation, substantially as set forth.

3. The combination with a valve chest provided with a branch outlet, as 0, of a safety stopper for closing said outlet and having a longitudinal groove therein, and a packing disk I, substantially as set forth.

4. The combination witha valve chest pro,-

vided with a branch outlet, as 0, in combination with the exit passage, of a safety stopper closing said outlet and having a 1ongitudinal groove therein and a pin in its rear end which is adapted to enter the aforesaid exit passage, and a packing disk as Z, substantially as set forth.

5. The combination with the valve and a hand wheel for operating the same, of a flask having a screw-threaded projection at the top, a hood inclosing the valve and adapted Wi tn esses R. Hess, ANNIE GRASSMANN.

IOO 

